Let's divide 1323866 by 639
We want to figure out the number of times 1323866 can be divided by 639.

On to step 1:
639 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 639

On to step 2:
When dividing 13 by 639, we get 0 with a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Bring next digit (2) of the dividend behind the 13 and repeat the process: 132 / 639

On to step 3:
639 can be fit into 132 0 times, resulting in a remainder of 132.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 132 to get 132.
Append the next digit (3) from the dividend to 132 and continue with: 1323 / 639

Going ahead to step 4:
639 goes into 1323 2 times with a remainder of 45.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 1278 from 1323, we get 45.
Grab the next digit (8) from the dividend, add it to 45, then carry on: 458 / 639

Advancing to step 5:
639 goes into 458 0 times with a remainder of 458.
The next digit of our result is 0. 
Result so far: 20.0
If we take 0 away from 458, we end up with 458.
Fetch the next digit (6) from the dividend, attach it to 458 and continue: 4586 / 639

On to step 6:
If we divide 4586 by 639, we get 7 and a remainder of 113.
Put 7 as the next digit of the answer. 
Result so far: 207.0
Subtract 4473 from 4586 to get 113.
Grab the next digit (6) from the dividend, add it to 113, then carry on: 1136 / 639

Advancing to step 7:
639 goes into 1136 1 times with a remainder of 497.
The next digit of our result is 1. 
Result so far: 2071.0
Subtracting 639 from 1136 leaves us with 497.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4970, and continue the process.

On to step 8:
If we divide 4970 by 639, we get 7 and a remainder of 497.
Record the quotient 7 as the next digit in the result. 
Result so far: 2071.7
If we subtract 4473 from 4970, we get 497.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4970, and continue the process.

Step 9:
4970 divided by 639 is 7 with a remainder of 497.
The next digit of our result is 7. 
Result so far: 2071.77
Subtracting 4473 from 4970 leaves us with 497.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4970, and continue the process.

Our division results in 2071.77 with a remaining 0.497.